<?xml version="1.0" encoding="UTF-8"?>
<dxl:DXLMessage xmlns:dxl="http://greenplum.com/dxl/2010/12/">
  <dxl:Comment><![CDATA[
    Test case: 3-level correlated subquery with outer refs of different levels in LOJ ON clause,
               using "exhaustive2"

    drop table if exists foo, bar, jazz;
    create table foo(a int, b int);
    create table bar(a int, b int);
    create table jazz(a int, b int);

    set optimizer_enumerate_plans = on;
    set optimizer_join_order = exhaustive2;
    explain
    select * from foo
    where foo.a in (select sum(bar.a+foo.a)
                    from bar
                    where a in (select coalesce(j2.b, 0)
                                from jazz j1
                                     left outer join jazz j2 on j1.a + foo.a = j2.a
                                     left outer join jazz j3 on j1.b + foo.a + bar.b = j3.b));

    Expect a nested plan with nested loop joins:

                                                             QUERY PLAN
    ----------------------------------------------------------------------------------------------------------------------------
     Result  (cost=0.00..1896948689260387.75 rows=1 width=8)
       Filter: (subplan)
       ->  Gather Motion 3:1  (slice1; segments: 3)  (cost=0.00..431.00 rows=1 width=8)
             ->  Table Scan on foo  (cost=0.00..431.00 rows=1 width=8)
       SubPlan 2
         ->  Aggregate  (cost=0.00..1852488953493.85 rows=1 width=8)
               ->  Result  (cost=0.00..1852488953493.85 rows=1 width=4)
                     Filter: (subplan)
                     ->  Materialize  (cost=0.00..431.00 rows=1 width=8)
                           ->  Gather Motion 3:1  (slice2; segments: 3)  (cost=0.00..431.00 rows=1 width=8)
                                 ->  Table Scan on bar  (cost=0.00..431.00 rows=1 width=8)
                     SubPlan 1
                       ->  Result  (cost=0.00..1809070381.65 rows=3 width=4)
                             ->  Nested Loop Left Join  (cost=0.00..1809070381.65 rows=3 width=4)
                                   Join Filter: (public.jazz.b + $1 + $3) = public.jazz.b
                                   ->  Nested Loop Left Join  (cost=0.00..1765377.29 rows=1 width=8)
                                         Join Filter: (public.jazz.a + $1) = public.jazz.a
                                         ->  Materialize  (cost=0.00..431.00 rows=1 width=8)
                                               ->  Gather Motion 3:1  (slice5; segments: 3)  (cost=0.00..431.00 rows=1 width=8)
                                                     ->  Table Scan on jazz  (cost=0.00..431.00 rows=1 width=8)
                                         ->  Materialize  (cost=0.00..431.00 rows=1 width=8)
                                               ->  Gather Motion 3:1  (slice4; segments: 3)  (cost=0.00..431.00 rows=1 width=8)
                                                     ->  Table Scan on jazz  (cost=0.00..431.00 rows=1 width=8)
                                   ->  Materialize  (cost=0.00..431.00 rows=1 width=4)
                                         ->  Gather Motion 3:1  (slice3; segments: 3)  (cost=0.00..431.00 rows=1 width=4)
                                               ->  Table Scan on jazz  (cost=0.00..431.00 rows=1 width=4)
     Settings:  optimizer_join_order=exhaustive2
  ]]>
  </dxl:Comment>
  <dxl:Thread Id="0">
    <dxl:OptimizerConfig>
      <dxl:EnumeratorConfig Id="0" PlanSamples="0" CostThreshold="0"/>
      <dxl:StatisticsConfig DampingFactorFilter="0.750000" DampingFactorJoin="0.010000" DampingFactorGroupBy="0.750000" MaxStatsBuckets="100"/>
      <dxl:CTEConfig CTEInliningCutoff="0"/>
      <dxl:WindowOids RowNumber="7000" Rank="7001"/>
      <dxl:CostModelConfig CostModelType="1" SegmentsForCosting="3">
        <dxl:CostParams>
          <dxl:CostParam Name="NLJFactor" Value="1024.000000" LowerBound="1023.500000" UpperBound="1024.500000"/>
        </dxl:CostParams>
      </dxl:CostModelConfig>
      <dxl:Hint JoinArityForAssociativityCommutativity="18" ArrayExpansionThreshold="100" JoinOrderDynamicProgThreshold="10" BroadcastThreshold="100000" EnforceConstraintsOnDML="false" PushGroupByBelowSetopThreshold="10"/>
      <dxl:TraceFlags Value="101013,102001,102002,102003,102043,102074,102113,102120,102144,102147,103001,103014,103015,103022,103027,103029,103033,103037,104003,104004,104005,104006,105000"/>
    </dxl:OptimizerConfig>
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          <dxl:Opfamily Mdid="0.1976.1.0"/>
          <dxl:Opfamily Mdid="0.1977.1.0"/>
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        <dxl:SumAgg Mdid="0.0.0.0"/>
        <dxl:CountAgg Mdid="0.2147.1.0"/>
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      <dxl:Type Mdid="0.20.1.0" Name="Int8" IsRedistributable="true" IsHashable="true" IsMergeJoinable="true" IsComposite="false" IsTextRelated="false" IsFixedLength="true" Length="8" PassByValue="true">
        <dxl:EqualityOp Mdid="0.410.1.0"/>
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        <dxl:GreaterThanEqualsOp Mdid="0.415.1.0"/>
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        <dxl:CountAgg Mdid="0.2147.1.0"/>
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        <dxl:InequalityOp Mdid="0.518.1.0"/>
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        <dxl:LessThanEqualsOp Mdid="0.523.1.0"/>
        <dxl:GreaterThanOp Mdid="0.521.1.0"/>
        <dxl:GreaterThanEqualsOp Mdid="0.525.1.0"/>
        <dxl:ComparisonOp Mdid="0.351.1.0"/>
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        <dxl:Commutator Mdid="0.410.1.0"/>
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          <dxl:Opfamily Mdid="0.1976.1.0"/>
          <dxl:Opfamily Mdid="0.1977.1.0"/>
          <dxl:Opfamily Mdid="0.3028.1.0"/>
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      </dxl:GPDBScalarOp>
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        <dxl:InequalityOp Mdid="0.608.1.0"/>
        <dxl:LessThanOp Mdid="0.609.1.0"/>
        <dxl:LessThanEqualsOp Mdid="0.611.1.0"/>
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        <dxl:MaxAgg Mdid="0.2797.1.0"/>
        <dxl:AvgAgg Mdid="0.0.0.0"/>
        <dxl:SumAgg Mdid="0.0.0.0"/>
        <dxl:CountAgg Mdid="0.2147.1.0"/>
      </dxl:Type>
      <dxl:GPDBScalarOp Mdid="0.413.1.0" Name="&gt;" ComparisonType="GT" ReturnsNullOnNullInput="true" IsNDVPreserving="false">
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          </dxl:Column>
          <dxl:Column Name="tableoid" Attno="-7" Mdid="0.26.1.0" Nullable="false" ColWidth="4">
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          </dxl:Column>
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            <dxl:DefaultValue/>
          </dxl:Column>
        </dxl:Columns>
        <dxl:IndexInfoList/>
        <dxl:Triggers/>
        <dxl:CheckConstraints/>
      </dxl:Relation>
      <dxl:RelationStatistics Mdid="2.408877.1.0" Name="bar" Rows="0.000000" EmptyRelation="true"/>
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      <dxl:ColumnStatistics Mdid="1.408880.1.0.0" Name="a" Width="4.000000" NullFreq="0.000000" NdvRemain="0.000000" FreqRemain="0.000000" ColStatsMissing="true"/>
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    </dxl:Metadata>
    <dxl:Query>
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        <dxl:Ident ColId="2" ColName="b" TypeMdid="0.23.1.0"/>
      </dxl:OutputColumns>
      <dxl:CTEList/>
      <dxl:LogicalSelect>
        <dxl:SubqueryAny OperatorName="=" OperatorMdid="0.15.1.0" ColId="47">
          <dxl:Ident ColId="1" ColName="a" TypeMdid="0.23.1.0"/>
          <dxl:LogicalGroupBy>
            <dxl:GroupingColumns/>
            <dxl:ProjList>
              <dxl:ProjElem ColId="47" Alias="sum">
                <dxl:AggFunc AggMdid="0.2108.1.0" AggDistinct="false" AggStage="Normal" AggKind="n" >
                  <dxl:ValuesList ParamType="aggargs">
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</dxl:DXLMessage>
